License inconsistency

[RyanHumps]

README.md:

## License
FXSkins uses the ['GNU General Public License, version 2, with the Classpath Exception'](https://openjdk.java.net/legal/gplv2+ce.html)

pom in maven central:

...
<license>
<name>GNU General Public License v3.0-or-later</name>
<url>https://opensource.org/licenses/lgpl-3.0.html</url>
<distribution>repo</distribution>
</license>
...

Note the maven central license url returns a 404 error.